Horology: time measuring systems or devices – Astronomical
Patent
1991-09-27
1994-11-22
Roskoski, Bernard
Horology: time measuring systems or devices
Astronomical
368 35, 368 37, 368 31, 368 34, 368190, G04B 1926
Patent
active
053675045
ABSTRACT:
This invention concerns a timepiece of the mechanical and/or electromechanical type. Such piece comprises a first display mechanism (1), in particular a date display, a second display mechanism (2) such as a moon phase display, rapid correction means (4) for both display mechanisms (1, 2) and a driving organ (6) which controls such display mechanisms (1, 2) and which can absorb equally the displacement of one or the other of these mechanisms, such piece being characterized in that the rapid correction means (4) comprises meshing means (64) common to both mechanisms (1, 2), mounted for rotation and adapted to operate alternatively upon one or the other of such two mechanisms (1, 2) under the action of control means (72, 74). This invention is applicable to calendar and moon phase watches having a center date hand.
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patent: 1988782 (1935-01-01), Canepa
patent: 3703805 (1972-11-01), Ganter et al.
patent: 4196578 (1980-04-01), Besson
patent: 4259735 (1981-03-01), Vuille
patent: 4674889 (1987-06-01), Klaus
patent: 4766579 (1988-08-01), Sporring
patent: 4881213 (1989-11-01), Zaslawsky
patent: 4974242 (1990-11-01), Vuilleumier
Eta SA Fabriques d' Ebauches
Roskoski Bernard
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